Grinding composition.



" UNITED STATES PATENT oFF oE,

EDWARD B. GALLAHER, or NEW YORK, N. Y., ASSIGNOR To CLOVER MANUFACTURINGCOMPANY, OF NEW YORK, N. A CORPORATION OF NEW YORK.

GRIN ING courosrrron.

Specification of Letters Patent. Application filed. July 16, 1907.Serial in. 384,013.

Patented June 8, 1909..

automobiles or autoboats-and it has for its objects, first, to produce acomposition of matter for such use, the body or sustaining part of whichis anoil, preferably a mineral .oil, which will not run or melt atordinary have such a consistency'that the grinding owder shall alwaysretain its intermixedreation with the oil for all climatic and. alltemperatures engendered in actual use.

' Third, to produce a com .osition of matter of a powdered grinding sustance and an oil,- the latter being of such consistency that for allclimatic and other temperatures engendered in actual use the same maybe,packed in containing vessels without any possibility of the oil andthe powder varying their relative intermixed proportions, either in useor during transportation. Fourth, to produce a composition of matterwhich'may be utilized in such cases with a single a plication thereofand which may be quick y ande'asily vremoved from the valve and valveseat by the user without the possibility of the admission of any partthereof into the .interior of the engine. Fifth, to produce acomposition of matter of a grinding substance and an oil of suchviscosity that it will notflow either for climatic temperatures or fortemperatures such as are engendered by theruse thereof. Sixth, toproduce a composition of matter for rinding valves and valve seats whichshall be of such a viscous nature that it ma be carried in boxes orbottles in the too it is important that the valves shall be accuratelyadjusted in their'seats so as to obtain the best possible results fromthe explosions of the gases utilized, and when engines of this type areneglected in respect to such proper relation of the valves and valveseats they soon become worthless and are relegatedto the re air shops.It has been customary heretoibre to efi'ect the seating of such valvesby the use of oils generally, combined with grinding powders by firstsmear- ;ing or rubbing a small quantity of oil, such as petroleum, uponthe valve or valve seat;

then sprinkling the powder, such as powdared carborundum, emery' or thelike upon the surface of the oil and afterward seating the valve, andrapidly rotating it back and forth until the desired result wasattained.

;As a matter of fact, however, this cannot be accomplished .with oneapplication of the In the use of explosive engines generally material,and the operator 1s called upon to remove the valve and reapply thematerial,

very often a number' of times. Such oils, owing to their fluidcondition, 'run freely, and in the application of the powders the latterare adnntted to the interlor of the engine in suflicien't quantities todamage the piston and piston rings to such an extent as to make itnecessary to send the engine to the repair shop. It sometimes happens inthus sprinkling the powder upon the oil, after it has een smeared overthe bearingface-of the valve, that small globules or volumes thereofwill fall upon the surface of the oil and will not be fully absorbed, sothat when the valve is being seated the unattached powder will fall Myinvention overcomes all of these seq rious objections in that Ipreferabl utilize a "non-fluid mineral oil known genera y among oilrefiners as petroleum hard oil as a base for my novel grinding andpolishing com osition of matter, I have ascertained t at oils of themineral type, such as petroleum, and particularly the non-fluid productthereof,

- finish the work with the finer product.

refining'as petroleum hard oil), is especially fitted for this purpose,in that it will not flow for climatic or frictional tern eratures underfrom 125 to 150 degrees, etroleum hard oil is also known and sold by thetrade as a non flowing oil which will not fiow for climatictemperatures. With this oil I thoroughly mix or combine any well knowngrinding substance in the nature of a fine .powder, preferably finecarborundum, as

carborundum is found to be one of the best grinding and I thoroughl mixthese ingredients in preferably the f0 lowing proportions2% pounds ofcoarse powdered carborundum to 10 pounds of non-fluid oil. For a finercomposition I thoroughly mix 2 pounds of fine powdered carborundum to 10ounds of nonfluid oil.. In general I uset e coarser prod uct first forreducing the valves and valve seats to approximate accurate relation andOf course, the proportions of the ingredients and relative quality orfineness of the powder may be varied to suit the conditions of the case,the essence of my invention lying in the production of a com osition ofmatter for the purpose described w 'ch will not flow for ordinaryclimatic temperatures during the heated season, or for such temperaturesas are engendered by the usage due to friction in the act of applyingthe material.

I do not limit my invention to the especial combination of materialshereinbefore described, nor to the specific proportions there of,forthat, obviously various non-fluid oils which would not flow at thetemperatures inpolishing substances known.

dicated might be substituted and various grinding powders or substancessuch as are well known and in general use in the art of grinding andpolishing might be substituted or carborundum, my invention embodyinggenerically the combination of a powdered polishing or grindingvsubstance with a petroleum hard oil, also known as a nonflowing oil,which will maintain its viscosity or non-tendency to run under theconditions named, although the identical substances named and theproportions thereof used are preferred, as I have been enabled to obtainsuch results therewith as to make this composition of matter a veryvaluable product 1n the art of grinding and seatlng valves. specific useto which it is herein referred to as Nor do I limit my invention to thebeing applied, as obviously the same may be 7 utilized generally in theart of grinding and polishing surfaces where it is important that theresults which I claim for this product ma be attained.

J aving thus described my invention what I claim and desire to secure byLetters Patent of the United States is- A composition of matter forgrinding and polishing surfaces composed of a grinding powder intermixedwith petroleum hard oil, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of I two subscribing witnesses.

EDWARD B. GALLAHER.

